I'm kind of easy, it's a movement which has emerged within the Hindu framework even if you don't wanna call yourself Hindu no more.
Like several others. Off on on. I like to leave it up to the adherents/followers themselves to define, not outsiders like you and me. I have discussed with BKs before at booths at 'spiritual' bazaars. Certainly not non-tantrik Saivism as the OP was looking for.